The natural origin of diploid parthenogenesis in whiptail lizards has been through interspecific hybridization. Genomes of the parthenogens indicate that they originated in one generation, as the lizards clone the F₁ hybrid ...

"Labyrinthodont amphibians from the Lower Triassic Fremouw Formation of Antarctica are described. These consist of a fragment of a lower jaw collected at Graphite Peak in the Transantarctic Mountains in December, 1967, and ...

"Lagomorphs of ?latest Arikareean-medial Hemingfordian faunas from the Zia Sand include at least two archaeolagine leporids and an ochotonid. The latest Arikareean or earliest Hemingfordian Standing rock local fauna includes ...

Clench, William James, 1897-; Coultas, William F.; Eyerdam, Walter J.; Mayr, Ernst, 1904-; Mann, William M., 1886-1960.; Whitney South Sea Expedition of the American Museum of Natural History (1920-1941)(New York City : The American Museum of Natural History, 1941)

The idea of humans as rational and optimal creatures is making a comeback. But Gary Marcus, psychology professor and director of the NYU Center for Child Language, delivers the 80th Annual James Arthur Lecture during which ...

"The members of the lapidicina complex fall into three groups based on the structure of the male palp. The first group, comprising Pardosa lapidicina, mercurialis, tumida, and steva, has an inconspicuous, weakly sclerotized ...

We report a new alvarezsaurid, Kol ghuva, from the late Cretaceous of Mongolia that demonstrates that the clade was not restricted to small taxa (~3-15 kg). The specimen was found at the Ukhaa Tolgod locality, which has ...

"Several species of Homalictus and the related genus Urohalictus are markedly larger than other Homalictus. All these large species (all but one of which are new) occur at moderate to high altitudes in New Guinea or nearby ...